Humidifier



FIG. 1 is a perspective view of the humidifier showing my new design in a first state;

FIG. 2 is similar to FIG. 1, viewed from another aspect;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a perspective view of the humidifier in a second state.

The broken lines are for the purposes of illustrating portions of the humidifier and form no part of the claimed design. 

CLAIM The ornamental design for a humidifier, as shown and described. 